JP3661251B2 - Mounting structure for underfloor ventilation fan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting structure for an underfloor ventilation fan installed in an underfloor vent established on a fabric foundation such as a detached house.
[0002]
[Prior art]
In general, a house constructed on a fabric foundation such as a detached house is required by law to provide an underfloor vent in order to maintain the underfloor in a sanitary state. However, relying solely on natural ventilation may not be sufficient, for example, mechanical ventilation has been proposed that actively installs moisture under the floor by installing an underfloor ventilation fan in the north underfloor vent. ing.
Conventionally, this type of underfloor ventilation fan A has a decorative panel 2 having an attachment hole 32 and an underfloor air outlet 12 for attachment to the underfloor vent B as shown in FIG. A motor (not shown), a propeller fan (not shown), and the like are constituted by a ventilation fan main body 1 having a function necessary for ventilation and are integrated in advance.
In order to install the underfloor ventilation fan A in the underfloor vent B, first, a lower hole b3 is opened around the edge of the underfloor vent B at the same size as the mounting hole 32, and the curl plug 6 is inserted. The ventilation fan body 1 is inserted into the underfloor vent B, the flange surface composed of the decorative panel 2 and the ventilation fan body 1 is brought into contact with the outer peripheral edge of the underfloor vent B, and the concrete screw 7 is screwed through the mounting hole 32. As a result, the curled plug 6 spreads and bites into the fabric base C, and the underfloor ventilation fan A is fixed and installed.
[0003]
[Problems to be solved by the invention]
However, the fabric foundation C is not precisely constructed due to the nature of the underfloor vent B, in addition to the concrete construction, and has the same dimensions as the mounting holes 32 of the underfloor ventilator A around the edge of the underfloor vent B. If the lower hole b3 is to be opened at the position, it may be necessary to open the edge of the underfloor vent B. If the lower hole b3 is opened as it is, the fabric base C may be damaged, or the lower hole b3 may be temporarily opened. Even if the concrete screw 7 is screwed in, the spread of the curled plug 6 will damage the fabric foundation C. For this reason, the construction of the ventilation fan A under the floor is slightly shifted and reworked or reinforced with an adhesive such as cement.
Furthermore, since a lot of curl plugs 6 and concrete screws 7 are wasted, it is not economical.
In addition, such an attachment method requires dedicated tools including a drill and the like, and is limited to workers who can handle them and have the skills to construct them.
Furthermore, since the fixing method of the underfloor ventilation fan A is screwed to the cloth foundation C, the entire load of the underfloor ventilation fan A is concentrated in the lower hole b3. Therefore, in order to ensure the attachment strength, complete curing of the fabric foundation C is an absolute condition, and therefore the construction time is restricted.
Moreover, the attachment strength could not be maintained due to secular change due to erosion, and there was a possibility that the underfloor fan A might fall out of the underfloor vent B.
The mounting hole b3 of the underfloor ventilation fan A is opened for the design of the underfloor vent B having a certain size. However, as described above, the underfloor vent is provided in addition to the case where it cannot be partitioned due to the construction accuracy of the underfloor vent B. Depending on the size of B itself, the corresponding partition may not be available. In the first place, the size of the underfloor vent B is different for each house maker or building designer, and there is a problem that the underfloor fan of the above mounting size cannot basically be attached.
[0004]
The present invention has been made in view of the conventional circumstances, and the target process is an underfloor ventilation fan that can easily and reliably fix the underfloor fan to the underfloor vent without using a fixing means to the cloth foundation. It is to provide a mounting structure.
Another object of the present invention is to provide a mounting structure for an underfloor ventilation fan that can fix the underfloor ventilation fan to an underfloor vent hole with inaccuracy or an underfloor vent hole having a different size.
[0005]
[Means for Solving the Problems]
The technical means taken in order to achieve the above-mentioned object is as follows. Claim 1 is a strut that is provided on both sides of the ventilating fan body and that can adjust the amount of vertical expansion and contraction that presses the upper and lower inner surfaces of the underfloor vent provided on the fabric foundation. The ventilating fan main body is provided with an abutting means that is hooked to the rear part of the strut support post so as to be adjustable in the front-rear fixed position and abuts against the back surface of the cloth foundation, and an exhaust port that exhausts the underfloor air from the ventilating fan main body. A decorative panel for covering the underfloor vent from the outdoor side, and the abutting means has a plurality of convex portions protruding along the depth direction of the underfloor vent at equal intervals from the ventilation fan body, and the convex portion The slits of the comb teeth are inclined downwardly toward the space below the floor. And summarized in that it is formed on the slant.
Further, according to claim 2, the decorative panel of claim 1 is configured such that the exhaust port is configured with a number of exhaust holes, a bracket is provided on the back side of the exhaust hole, and the bracket is fixed with a fixing bracket through the exhaust hole. The gist is that it is attached and fixed to the ventilation fan body.
[0006]
According to the above technical means, the following effects are obtained.
(Claim 1) A ventilation fan body in which the front and rear fixing positions of the abutting means are set in advance as desired is inserted into the underfloor vent so that the abutting means abuts on the back surface of the cloth base, and the vertical expansion / contraction amount can be adjusted in that state. Adjust the amount of vertical expansion and contraction of the bracing strut, press and support it on the upper and lower inner surfaces of the underfloor vent, fix the ventilator main body in the underfloor vent, and the decorative panel attached to the front of the ventilator fan covers the ventilator fan from the front At the same time, the main body of the ventilation fan is fixed stably by sandwiching the cloth foundation.
In addition, the abutting means abuts against the back surface of the fabric foundation to prevent the ventilation fan body from slipping from the underfloor vent where the drainage gradient is provided.
When the ventilation fan main body is clamped and fixed by the decorative panel and the abutting means, a slit inclined obliquely downward toward the space below the floor by receiving the clamping force guides the convex portion protruding from the ventilation fan main body toward the slit bottom. And firmly hook it to the bottom of the slit.
(Claim 2) The fixing bracket of the decorative panel is prevented from being exposed to the outside.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show the present embodiment, where A is an underfloor ventilator, and B is an underfloor vent formed in the cloth foundation C with a rectangular shape slightly larger than the ventilator main body 1 of the underfloor ventilator A. FIG.
[0008]
In the present embodiment, the underfloor ventilation fan A shows a case where a sirocco fan is used as a ventilation source, and includes a ventilation fan body 1 and a decorative panel 2.
[0009]
The ventilation fan body 1 has a drive motor 21 fixed in a penetrating manner to an upper surface portion 11a of a box-shaped fan casing 11 with the front open, and a sirocco fan 31 is attached to a motor shaft 21a of the drive motor 21 in a suspended manner. An air intake 41 is opened in the lower surface portion 11 b of the fan casing 11 facing the sirocco fan 31, and the air intake 41 is covered with a dead leaf net 51.
[0010]
The decorative panel 2 has a rectangular shape in front view with a slightly larger area than the underfloor vent B, and is provided with an exhaust port 12 including a number of small exhaust holes 12a at a portion facing the front opening of the fan casing 11. Yes.
[0011]
The ventilating fan body 1 is provided with struts 3 on both sides of the front side, and is provided with abutting means 4 that abuts against the back surface of the fabric foundation C on both sides of the struts 3 and is opposed to the outermost exhaust vent hole 12a. A mounting bar 11c is vertically mounted across the upper surface portion 11a and the lower surface portion 11b in the fan casing 11.
[0012]
As shown in the figure, the strut 3 is a front side made of an L-shaped angle member having mounting seats 13 and 13 projecting integrally from both side surfaces of the fan casing 11 at a vertical interval and long holes 23a and 33a. It is composed of a support post 23, a back support post 33, and a mounting bracket 43 that is inserted through the long holes 23a, 33a and screwed into the screw holes 13a of the mounting seats 13, 13 and either the front support post 23 or the back support post 33. The mounting bracket 43 is inserted through the long holes 23a and 33a in a state where one is in contact with the upper inner surface b1 of the underfloor vent B and the other is in contact with the lower inner surface b2 of the underfloor vent B. The ventilation fan body 1 is set horizontally in the underfloor vent B by being fastened to a hole (not shown).
In addition, since the strut 3 can individually change the vertical expansion and contraction amount of the front strut 23 and the back strut 33, the ventilation fan body 1 is set at the center of the underfloor vent B regardless of the size of the underfloor vent B. can do.
[0013]
The abutting means 4 is composed of a plurality of convex portions 14 projecting from the both side surface portions of the fan casing 11 along the depth direction of the fan casing 11 at equal intervals, and a contact portion 24 that abuts against the back surface of the fabric foundation C. Yes.
[0014]
The contact portion 24 is formed from the rear end of the comb tooth portion 24a in which a large number of slits 24c are arranged in a slanting downwardly inclined downward direction toward the underfloor space to be inserted into the convex portions 14 and latched. The angled contact piece 24d that abuts the back surface of the fan is bent at a right angle, and the front and rear fixing position relative to the fan casing 11 is adjusted by changing the position of the slit 24c where the plurality of convex portions 14 are inserted and locked. It can be done.
The projections 14 are screws, and the head 14a engages with the edges of the slit 24c, so there is no fear of falling off.
[0015]
The decorative panel 2 is integrally provided with a bracket 22 on the back surface opposite to the screw hole 11c 'opened in the mounting bar 11c, and the bracket 22 has an outermost exhaust small hole 12a and a screw hole of the mounting bar. An insertion hole 15 for the fixing metal 5 is opened opposite to 11c ′.
[0016]
Next, the installation procedure of the underfloor ventilation fan A according to the present embodiment will be briefly described. First, the thickness of the cloth foundation C is measured, and compared with the thickness, the decorative panel 2 and the contact piece 24d between the contact means 4d and the contact piece 24d. The left and right abutting means 4 and 4 are set so that the interval is reduced.
The abutting means 4 and 4 can be easily set by selecting the slits 24c inserted into the plurality of convex portions 14 as described above.
Further, the ventilation fan main body 1 is inserted obliquely into the underfloor vent B, the contact piece 24d is brought into contact with the back surface of the fabric foundation C, and the struts 3 and 3 are artificially operated to vertically move the upper and lower inner surfaces b1 of the underfloor vent B. , B2 to support the ventilation fan body 1 horizontally.
Then, the decorative panel 2 is brought into contact with the surface of the fabric foundation C so as to cover the opening on the outdoor side of the underfloor vent B, and a fixing bracket (screw) 5 is inserted from the outermost exhaust small hole 12a, and the bracket 22 Fastening to the screw hole 11c ′ of the mounting bar 11c through the insertion hole 15 and sandwiching the ventilation fan body 1 between the decorative panel 2 and the contact piece 24d, the installation of the underfloor ventilation fan A is completed.
Further, the ventilation fan body 1 is slightly elastically deformed to the decorative panel side by the fastening force of the fixing bracket 5 when the decorative panel 2 is attached, and accordingly, a latching relationship is formed in which the convex portion 14 is firmly engaged with the slit bottom 24c ′. .
As a result, a long-lasting fixing structure is obtained.
[0017]
Thus, in this embodiment, the decorative panel 2 is not directly fixed to the fabric foundation C. The abutting means 4 can be easily fixed by inserting the protrusion 14 into the slit 24c, and the strut 3 can be adjusted artificially from outside. For example, the purchaser can easily fix the underfloor ventilation fan A without any skill, and the fixing is naturally strong.
[0018]
In addition, since the sirocco fan 31 with high generated pressure is used as the ventilation source, there are many concrete partitions in the space under the floor and wind stagnation occurs in places with poor ventilation, etc. It is possible to prevent problems that prevent ventilation due to resistance, outside wind resistance, etc., and as a result of fixing the drive motor 21 to the upper surface portion 11a of the fan casing 11, the flooding height to the drive motor 21 can also be increased. , You will not be easily immersed in floods.
In addition, since the air intake 41 is opposed to the lower inner surface b2 of the underfloor vent B, the possibility of inhaling dust, dead teeth, etc. is avoided and stable ventilation compared to the case where the air intake 41 faces the underfloor space. Can be promised.
Note that it is optional to use a molded motor as the drive motor 21, and in such a configuration, even if it is immersed in water due to flooding or the like, a leakage accident or the like will not occur.
[0019]
Further, in the present embodiment, an underfloor fan using a sirocco fan as a ventilation source has been described in detail, but it includes a mounting structure of an underfloor fan incorporating a so-called cross-flow type fan such as a conventional propeller fan.
[0020]
【The invention's effect】
Since the present invention is configured as described above, it has the following advantages.
(Claim 1) When installing an underfloor fan in the underfloor vent, use a special tool to fabricate the lower part of the fabric foundation, which requires skill such as processing the lower hole, inserting a curl plug into the lower hole, etc. However, the purchaser can easily attach and fix the underfloor ventilation fan without fastening with concrete screws.
In addition, the abutment means is set with the front / rear position fixed to the ventilation fan main body by hooking in advance, and the ventilation fan main body is sandwiched and fixed by the decorative panel that is attached after the tension strut with adjustable vertical expansion / contraction amount. After the main body of the ventilation fan is inserted into the ventilation hole, it is not necessary to adjust the front and rear amount of the abutting means, and the mounting and fixing of the underfloor ventilation fan can be performed more easily.
In addition, the installation and fixing of the underfloor ventilation fan is done by using the struts that can adjust the amount of vertical expansion and contraction, the decorative panel that holds the fabric foundation, and the application means. This can contribute to shortening the construction period.
Furthermore, the construction error of the underfloor vent can be absorbed, and the versatility that can easily follow the underfloor vent of different sizes and attach and fix the underfloor fan can be provided.
In addition, there is no risk of the ventilation fan body slipping down by the lower inner surface of the underfloor vent provided with a drainage gradient by the abutting means that comes into contact with the back surface of the cloth foundation, and the underfloor fan can be firmly attached and fixed for a long period of time. .
In addition, since a pair of abutment means are provided separately on both sides of the ventilation fan body, the ventilation fan body can be securely and stably fixed to the underfloor vents even when the fabric foundation is uneven, improving ventilation efficiency. There is no fear of lowering.
In addition, comb-shaped slits that are hooked on a plurality of convex portions projecting along the depth direction of the underfloor vent at equal intervals from the ventilating fan body are formed in an obliquely downwardly inclined manner in the underfloor space direction. Therefore, receiving the fastening force to the ventilation fan body of the decorative panel, the convex part together with the ventilation fan body is elastically deformed to the decorative panel side by the slit and meshes with the slit bottom, making it stronger and more reliable in the long term The structure can be configured.
(Claim 2) In addition, the parts other than the decorative panel are not exposed outdoors, the appearance is good, and the appearance of the building is not deteriorated.
[Brief description of the drawings]
FIG. 1 is a front view showing a mounting state of an underfloor ventilation fan, partially cut away.
FIG. 2 is a sectional view taken along line (2)-(2) in FIG.
FIG. 3 is a partially cutaway view of the front view of the ventilation fan body.
FIG. 4 is an exploded perspective view of the underfloor ventilation fan.
FIG. 5 is a perspective view showing a mounting state of a conventional underfloor ventilation fan.
[Explanation of symbols]
A: Underfloor ventilation fan 1: Exhaust fan body B: Underfloor vent 3: Strut strut C: Fabric foundation 4: Abutment means
12: Exhaust port 12a: Exhaust hole
14: Convex 24c: Slit
24a: comb tooth part 24: hit part
12a: Exhaust hole 5: Fixing bracket
22: Bracket 2: Cosmetic panel

Claims (2)

A strut that can be adjusted up and down, which is pressed against the upper and lower inner surfaces of the underfloor vent on the fabric foundation, which is provided on both sides of the ventilator fan, and a rear fixed part of the ventilator fan that can be fixed to the front and rear. is provided that abuts against means on the back surface of the fabric foundation, and attached to the ventilating fan body having an exhaust port for exhausting the underfloor air from the ventilating fan body decorative panel that covered state the underfloor vents outdoor side, the abutting The means is formed from a plurality of convex parts protruding along the depth direction of the underfloor vent at equal intervals from the ventilation fan body, and a comb tooth part arranged in parallel with a number of slits to be inserted into the convex parts. are composed of a per unit in contact with the back of the fabric foundation, the slit of the comb-tooth portion, the underfloor ventilators characterized tare Rukoto formed obliquely downward inclined toward the underfloor space direction mounting structure . The decorative panel has a plurality of small exhaust holes, and has a bracket on the back side facing the small exhaust holes, and the bracket is attached to and fixed to the main body of the ventilation fan with a fixing bracket through the small exhaust holes. The mounting structure for an underfloor ventilation fan according to claim 1.

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